Korea Jeonse & Rent Calculator

Navigate the South Korean real estate market with total clarity and confidence. Korea Jeonse & Rent Calculator is an independent, 100% offline financial analysis and deposit safety toolkit designed for tenants, landlords, and investors in Korea.

Whether comparing Jeonse (lump-sum deposit) against Wolse (monthly rent), checking statutory conversion rate ceilings, or verifying HUG deposit return guarantee thresholds, this app delivers instantaneous calculations directly on your device.

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KEY FEATURES & CAPABILITIES
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1. JEONSE VS. WOLSE RENTAL ENGINE
• Dual-direction conversion: Instantly convert Jeonse deposits to monthly rent and vice versa.
• Opportunity Cost Modeling: Factor in bank savings interest, loan APR, and living costs.
• Break-Even Rent: Pinpoint the exact rent threshold where Jeonse and Wolse costs break even over 24 months.
• 2-Year Total Cost Comparison: Clear breakdown of loan interest paid, cumulative rent, and projected net savings.

2. STATUTORY CONVERSION RATE AUDIT (주택임대차보호법)
• Fully compliant with Article 7-2 of the Korean Housing Lease Protection Act.
• Automatic Legal Ceiling: Calculates the official statutory cap using min(10.0%, BOK Base Rate + 2.0%).
• Rent Surcharge Warning: Instantly identifies if a landlord's proposed Wolse rent exceeds legal caps.

3. HUG DEPOSIT GUARANTEE AUDIT (전세보증금 반환보증)
• Assess apartments, villas, officetels, and detached homes before signing.
• 90% Debt Ratio Rule: Audits combined senior mortgage debt (근저당권) plus deposit against property market value.
• Senior Mortgage Ceiling: Confirms senior debt does not exceed the mandatory 60% threshold.
• Court Auction Margin Simulator: Evaluates auction bid drops to gauge deposit recovery risks under foreclosure.

4. MARKET HUB & POPULAR PRESETS
• One-tap market presets for popular Korean rental hubs:
- Gangnam Officetel (Studio / Tech Corridor)
- Hongdae Student Studio (University Area)
- Mapo / Pangyo Family Apartment (Residential Hub)
- Suburban 2-Room (Commuter Belt)
• Custom Scenario Bookmarks: Save and recall multiple lease options for quick comparison.

5. SPECIAL PROTECTIVE LEASE CLAUSES (특약사항)
• Essential lease addenda recommended by legal experts to prevent deposit fraud (깡통전세):
- Next-day senior mortgage prohibition clause
- HUG guarantee insurance rejection full refund clause
- Landlord tax arrears warranty and cancellation clause
- Expiry date immediate deposit refund clause

6. 100% OFFLINE & COMPLETE PRIVACY
• Zero Data Collection: Your property addresses, lease terms, and financial inputs never leave your device.
• No Account Required: Use immediately with zero sign-up hassle.
• Completely sandboxed locally on your Android device.

7. KOREAN WON (₩ / 억 / 만) NOTATION
• Toggle between Korean financial notation (억, 만 원) and Western numeric delimiters for intuitive reading of large deposit figures.

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WHO IS THIS CALCULATOR FOR?
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• Tenants (임차인): Protect hard-earned deposits from negative equity (깡통전세) and verify legal rent caps.
• Landlords (임대인): Calculate legally compliant lease renewals and conversion rates.
• Real Estate Agents (공인중개사): Present clear, trustworthy comparative reports during consultations.
• Expats & Foreign Students: Demystify Korea's rental dynamics in your native language.

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LEGAL DISCLAIMER
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Korea Jeonse & Rent Calculator is an independent mathematical computation utility provided for informational and educational budgeting purposes only. It does not provide legal counsel, licensed brokerage services, or financial advice. Users should inspect certified property registers (등기부등본) and consult licensed real estate professionals before entering binding agreements.